/*
 * Copyright (C) 2008 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package foundation.zxing;

import android.app.Activity;

import java.text.DateFormat;
import java.util.Date;

import com.example.myzxingtest.R;
import com.google.zxing.client.result.CalendarParsedResult;
import com.google.zxing.client.result.ParsedResult;

/**
 * Handles calendar entries encoded in QR Codes.
 *
 * @author dswitkin@google.com (Daniel Switkin)
 * @author Sean Owen
 */
public final class CalendarResultHandler extends ResultHandler {

//  private static final String TAG = CalendarResultHandler.class.getSimpleName();

  public CalendarResultHandler(Activity activity, ParsedResult result) {
    super(activity, result);
  }

//  @Override
//  public int getButtonCount() {
//    return buttons.length;
//  }
//
//  @Override
//  public int getButtonText(int index) {
//    return buttons[index];
//  }
//
//  @Override
//  public void handleButtonPress(int index) {
//    if (index == 0) {
//      CalendarParsedResult calendarResult = (CalendarParsedResult) getResult();
//
//      String description = calendarResult.getDescription();
//      String organizer = calendarResult.getOrganizer();
//      if (organizer != null) { // No separate Intent key, put in description
//        if (description == null) {
//          description = organizer;
//        } else {
//          description = description + '\n' + organizer;
//        }
//      }
//
//      addCalendarEvent(calendarResult.getSummary(),
//                       calendarResult.getStart(),
//                       calendarResult.isStartAllDay(),
//                       calendarResult.getEnd(),
//                       calendarResult.getLocation(),
//                       description,
//                       calendarResult.getAttendees());
//    }
//  }

  /**
   * Sends an intent to create a new calendar event by prepopulating the Add Event UI. Older
   * versions of the system have a bug where the event title will not be filled out.
   *
   * @param summary A description of the event
   * @param start   The start time
   * @param allDay  if true, event is considered to be all day starting from start time
   * @param end     The end time (optional)
   * @param location a text description of the event location
   * @param description a text description of the event itself
   * @param attendees attendees to invite
   */
//  private void addCalendarEvent(String summary,
//                                Date start,
//                                boolean allDay,
//                                Date end,
//                                String location,
//                                String description,
//                                String[] attendees) {
//    Intent intent = new Intent(Intent.ACTION_INSERT);
//    intent.setType("vnd.android.cursor.item/event");
//    long startMilliseconds = start.getTime();
//    intent.putExtra("beginTime", startMilliseconds);
//    if (allDay) {
//      intent.putExtra("allDay", true);
//    }
//    long endMilliseconds;
//    if (end == null) {
//      if (allDay) {
//        // + 1 day
//        endMilliseconds = startMilliseconds + 24 * 60 * 60 * 1000;
//      } else {
//        endMilliseconds = startMilliseconds;
//      }
//    } else {
//      endMilliseconds = end.getTime();
//    }
//    intent.putExtra("endTime", endMilliseconds);
//    intent.putExtra("title", summary);
//    intent.putExtra("eventLocation", location);
//    intent.putExtra("description", description);
//    if (attendees != null) {
//      intent.putExtra(Intent.EXTRA_EMAIL, attendees);
//      // Documentation says this is either a String[] or comma-separated String, which is right?
//    }
//
//    try {
//      // Do this manually at first
//      rawLaunchIntent(intent);
//    } catch (ActivityNotFoundException anfe) {
//      Log.w(TAG, "No calendar app available that responds to " + Intent.ACTION_INSERT);
//      // For calendar apps that don't like "INSERT":
//      intent.setAction(Intent.ACTION_EDIT);
//      launchIntent(intent); // Fail here for real if nothing can handle it
//    }
//  }


  @Override
  public CharSequence getDisplayContents() {

    CalendarParsedResult calResult = (CalendarParsedResult) getResult();
    StringBuilder result = new StringBuilder(100);

    ParsedResult.maybeAppend(calResult.getSummary(), result);

    Date start = calResult.getStart();
    ParsedResult.maybeAppend(format(calResult.isStartAllDay(), start), result);

    Date end = calResult.getEnd();
    if (end != null) {
      if (calResult.isEndAllDay() && !start.equals(end)) {
        // Show only year/month/day
        // if it's all-day and this is the end date, it's exclusive, so show the user
        // that it ends on the day before to make more intuitive sense.
        // But don't do it if the event already (incorrectly?) specifies the same start/end
        end = new Date(end.getTime() - 24 * 60 * 60 * 1000);
      }
      ParsedResult.maybeAppend(format(calResult.isEndAllDay(), end), result);
    }

    ParsedResult.maybeAppend(calResult.getLocation(), result);
    ParsedResult.maybeAppend(calResult.getOrganizer(), result);
    ParsedResult.maybeAppend(calResult.getAttendees(), result);
    ParsedResult.maybeAppend(calResult.getDescription(), result);
    return result.toString();
  }

  private static String format(boolean allDay, Date date) {
    if (date == null) {
      return null;
    }
    DateFormat format = allDay
        ? DateFormat.getDateInstance(DateFormat.MEDIUM)
        : DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM);
    return format.format(date);
  }

  @Override
  public int getDisplayTitle() {
    return R.string.result_calendar;
  }
}
